Couple of great photos there,
@Billy1973. I've heard good things about the 3000A in both sound quality and very much more still in build quality (known stability issues notwithstanding). Looks like it was the model that bridged the period from the fairly rare TR-707A to the quite well known 5000. Did you put LEDs in it? The dial and mode indicators look quite vivid in the pictures, not sure if that was just the exposure or if they really are that bright.
One can already see the knob style used on the 5000 was established on these, yet the dial scale - and to a lesser extent the overall front panel design - and the rocker switches utilized - is more reminiscent of the TR-707 that preceded it. I'm always fascinate to study the evolutin of hi-fi aesthetics in this period. Very industrial and understated looking - almost like laboratory gear -versus the ostentstious look that became dominant in receivers by about 1978.
In any case, yet another heaping helping of Sansui cap coupled goodness with a lot of real metal sitting there. I'd guess it weighs as much or more than a 5000 which was only a year or so later in production: and it is a beastly heavy thing for it's overall size.